I'm having a little trouble interpreting the update/backdate rules on this subject. Any insight or opinions would be appreciated.
Currently, I am running a '95 Neon ACR sedan in ITA. this car was only available new as a SOHC since it was a sedan, but IIRC, there were a few '95 Neons sedans produced with DOHC engines (I have a VIN to support this). In the later years ('96-'99), there were plenty of DOHC sedans.
I am interested in utilizing the DOHC engine in my car per update/backdate. Assuming that I changed everything over and adjusted the minimum weight to 2650, would this be a legal change?